package com.sxhalo.manage.dao;

import java.sql.Timestamp;
import java.util.List;

import org.hibernate.LockOptions;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;

import com.sxhalo.manage.map.Task;
import com.sxhalo.manage.utils.Pager;

/**
 * A data access object (DAO) providing persistence and search support for Task
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see com.sxhalo.manage.dao.Task
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class TaskDAO {
	private static final Logger log = LoggerFactory.getLogger(TaskDAO.class);
	// property constants
	public static final String TASK_NAME = "taskName";
	public static final String TASK_PARENT = "taskParent";
	public static final String TASK_PROJECT = "taskProject";
	public static final String TASK_OWNER = "taskOwner";
	public static final String TASK_DURATION = "taskDuration";
	public static final String TASK_DURATION_TYPE = "taskDurationType";
	public static final String TASK_HOURS_WORKED = "taskHoursWorked";
	public static final String TASK_STATUS = "taskStatus";
	public static final String TASK_PRIORITY = "taskPriority";
	public static final String TASK_PERCENT_COMPLETE = "taskPercentComplete";
	public static final String TASK_DESCRIPTION = "taskDescription";
	public static final String TASK_DYNAMIC = "taskDynamic";
	public static final String TASK_CREATOR = "taskCreator";
	public static final String TASK_ACCESS = "taskAccess";
	public static final String TASK_DEPARTMENTS = "taskDepartments";
	public static final String TASK_CANTACTS = "taskCantacts";
	public static final String TASK_TYPE = "taskType";
	public static final String TASK_NOTIFY = "taskNotify";

	private SessionFactory sessionFactory;

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	private Session getCurrentSession() {
		return sessionFactory.getCurrentSession();
	}

	protected void initDao() {
		// do nothing
	}

	public void save(Task transientInstance) {
		log.debug("saving Task instance");
		try {
			getCurrentSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Task persistentInstance) {
		log.debug("deleting Task instance");
		try {
			getCurrentSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Task findById(java.lang.Integer id) {
		log.debug("getting Task instance with id: " + id);
		try {
			Task instance = (Task) getCurrentSession().get(
					"com.sxhalo.manage.map.Task", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Task instance) {
		log.debug("finding Task instance by example");
		try {
			List results = getCurrentSession()
					.createCriteria("com.sxhalo.manage.map.Task")
					.add(Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Task instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Task as model where model."
					+ propertyName + "= ?";
			Query queryObject = getCurrentSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByTaskName(Object taskName) {
		return findByProperty(TASK_NAME, taskName);
	}

	public List findByTaskParent(Object taskParent) {
		return findByProperty(TASK_PARENT, taskParent);
	}

	public List findByTaskProject(Object taskProject) {
		return findByProperty(TASK_PROJECT, taskProject);
	}

	public List findByTaskOwner(Object taskOwner) {
		return findByProperty(TASK_OWNER, taskOwner);
	}

	public List findByTaskDuration(Object taskDuration) {
		return findByProperty(TASK_DURATION, taskDuration);
	}

	public List findByTaskDurationType(Object taskDurationType) {
		return findByProperty(TASK_DURATION_TYPE, taskDurationType);
	}

	public List findByTaskHoursWorked(Object taskHoursWorked) {
		return findByProperty(TASK_HOURS_WORKED, taskHoursWorked);
	}

	public List findByTaskStatus(Object taskStatus) {
		return findByProperty(TASK_STATUS, taskStatus);
	}

	public List findByTaskPriority(Object taskPriority) {
		return findByProperty(TASK_PRIORITY, taskPriority);
	}

	public List findByTaskPercentComplete(Object taskPercentComplete) {
		return findByProperty(TASK_PERCENT_COMPLETE, taskPercentComplete);
	}

	public List findByTaskDescription(Object taskDescription) {
		return findByProperty(TASK_DESCRIPTION, taskDescription);
	}

	public List findByTaskDynamic(Object taskDynamic) {
		return findByProperty(TASK_DYNAMIC, taskDynamic);
	}

	public List findByTaskCreator(Object taskCreator) {
		return findByProperty(TASK_CREATOR, taskCreator);
	}

	public List findByTaskAccess(Object taskAccess) {
		return findByProperty(TASK_ACCESS, taskAccess);
	}

	public List findByTaskDepartments(Object taskDepartments) {
		return findByProperty(TASK_DEPARTMENTS, taskDepartments);
	}

	public List findByTaskCantacts(Object taskCantacts) {
		return findByProperty(TASK_CANTACTS, taskCantacts);
	}

	public List findByTaskType(Object taskType) {
		return findByProperty(TASK_TYPE, taskType);
	}

	public List findByTaskNotify(Object taskNotify) {
		return findByProperty(TASK_NOTIFY, taskNotify);
	}

	public List findAll() {
		log.debug("finding all Task instances");
		try {
			String queryString = "from Task";
			Query queryObject = getCurrentSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Task merge(Task detachedInstance) {
		log.debug("merging Task instance");
		try {
			Task result = (Task) getCurrentSession().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Task instance) {
		log.debug("attaching dirty Task instance");
		try {
			getCurrentSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Task instance) {
		log.debug("attaching clean Task instance");
		try {
			getCurrentSession().buildLockRequest(LockOptions.NONE).lock(
					instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static TaskDAO getFromApplicationContext(ApplicationContext ctx) {
		return (TaskDAO) ctx.getBean("TaskDAO");
	}

	public Pager findPagerList(int pageNumber, int pageSize, String whereStr) {
		log.debug("finding Pager Task instances");
		try {
			String queryString = "from Task";
			if (whereStr != null && whereStr.length() > 0) {
				queryString = queryString + " where " + whereStr;
			}
			Query queryObject = getCurrentSession().createQuery(queryString);
			// 总记录数
			int total = queryObject.list().size();
			Pager pageData = new Pager(total, pageNumber, pageSize);
			// 设置分页
			queryObject.setFirstResult((pageNumber - 1) * pageSize);
			queryObject.setMaxResults(pageSize);
			// 分页数据
			pageData.setList(queryObject.list());
			return pageData;
		} catch (RuntimeException re) {
			log.error("find Pager Task failed", re);
			throw re;
		}
	}
}